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editorial

. 2017 Mar 15;13:15. doi: 10.1186/s12992-017-0236-6

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© The Author(s). 2017

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Median TB incidence rate/100,000 person-year for each group of country (High, Upper-middle, Low-middle and Low-Income Countries)^* 1990–2014. ^*Median incidence was calculated using panel data, collapsing countries and calculating the median TB incidence by group of country/year. Source: Tuberculosis data extracted from WHO [1]. World Bank [4] was used to classify country groups